<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>webpack5</title>
</head>
<body>
  <div class="box1">box1</div>
  <div class="box2">box2</div>
  <div class="box3">box3</div>
  <div class="box4">box4</div>
  <!-- 使用字体图标 -->
  <i class="iconfont icon-xing"></i>
  <i class="iconfont icon-xingxing"></i>
  <i class="iconfont icon-shengdanye"></i>
  <button id="btn">动态引入</button>
</body>
</html>